/*
 * Copyright [2017] [xiao]
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.github.mcxiao.ipmsg;

import java.lang.ref.WeakReference;

/**
 */
public abstract class Manager {

    private final WeakReference<AbstractConnection> weakConnection;

    public Manager(AbstractConnection connection) {
        if (connection == null) {
            throw new NullPointerException("Connection must not be null");
        }

        weakConnection = new WeakReference<>(connection);
    }

    protected final AbstractConnection connection() {
        return weakConnection.get();
    }

}
